TECHNOLOGY mortar mix Copyright © 1990 - 2011 All rights reserved TERMS SITEMAP LINKS The moladi mortar that is used to fill the wall cavity is essentially concrete without stone. The mix design of the mortar is specifically determined by laboratory tests that are carried out on local sand or aggregate, to ensure that quality standards are adhered to. The density of the mortar will vary depending on the sieve grading of the sand used, but will range between 1600 to 1800 kg per cubic meter. The mortar mixture produces a fast curing aerated mortar which flows easily, is waterproof and possesses good thermal and sound insulating properties. Fly ash can be used as an extender to substitute the use of cement in order to reduce the volume of cement, but will still achieve the same ultimate compressive strength - mPa. A compressive strength of between 10 and 30 mPa can be achieved in a 28-day period, depending on the cement: water ratio. Under normal conditions the mortar usually sets during the night (12 to 15 hours) and the formwork is removed the following morning. There is no need to vibrate the mortar in order to achieve a smooth finish. At the start of each project, cube tests are to be carried out, which would determine the compressive strength of the mix design specific to each project. The application of moladiCHEM is 1litre per 50kg of cement. All moladi structures have steel reinforced internal and external walls. The reinforcing design is specified by an independent, certified engineer; according to the requirements of the structure, which is dependant on soil conditions such as Clay, expanding soils, collapsing soils, dolomite etc. The engineer would also take into account if the structure would be subjected to earth tremors, quakes or hurricanes. As moladi structures are uniformly cast, with the reinforcing placed in strategic positions, the building is more resistant to seismic movement. All the electrical and water piping is positioned onto the formwork prior to the location onto the formwork and cast in situ. One generic cubic meter of moladi mortar consists of:* ▪ 1800kg or 0.720m3 of local decomposed granite / river sand ▪ 250kg of ordinary Portland cement: (OPC) ▪ 5 litres of moladiCHEM, a non-toxic, water based chemical cocktail ▪ 200 litres of water   * Please note that the above is a generic site mix ratio and will be    verified with trail mixes at the site mix plant. Key Advantages: • Laboratory formulated • Custom mix design • Fast curing aerated mortar • Flows easily • Waterproof • Sets overnight • No need to vibrate